<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      true
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRolesDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列  -->
        <el-table-column type="expand">
          <!-- eslint-disable -->
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom',i1 === 0 ? 'bdtop' :'' ,'vcenter']"
              v-for="(item1,i1) in scope.row.children"
              :key="item1.id"
            >
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="19">
                <el-row
                  :class="[i2 === 0 ? '':'bdtop','vcenter']"
                  v-for="(item2,i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row,item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      closable
                      v-for="(item3,i3) in item2.children"
                      :key="item3.id"
                      @close="removeRightById(scope.row,item3.id)"
                    >{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
          <!-- eslint-enable -->
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="400px">
          <!-- eslint-disable -->
          <template slot-scope="scope">
            <!-- eslint-enable -->
            <el-button
              type="primary"
              icon="el-icon-edit" size="mini"
              @click="showRolesEditDialog(scope.row.id)"
            >编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRolesById(scope.row.id)">删除</el-button>
            <el-button
              type="warning"
              icon="el-icon-setting" size="mini"
              @click="showSetRightDialog(scope.row)"
            >分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限对话框 -->
    <el-dialog
      title="提示"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- 树形控件 -->
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights()">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 添加角色Dialog对话框 -->
    <el-dialog
      title="添加角色"
      :visible.sync="addRolesDialogVisible"
      width="50%"
      @close="addRolesDialogClose"
    >
      <el-form
        :model="addRolesForm"
        :rules="addRolesFormRules"
        ref="addRolesFormRef"
        label-width="100px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addRolesForm.roleName"></el-input>
        </el-form-item>

        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addRolesForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRolesDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoles()">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改角色Dialog对话框 -->
    <el-dialog
      title="修改角色"
      :visible.sync="editRolesDialogVisible"
      width="50%"
      @close="editRolesDialogClose"
    >
      <el-form
        :model="editRolesForm"
        :rules="editRolesFormRules"
        ref="editRolesFormRef"
        label-width="100px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editRolesForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editRolesForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editRolesDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRolesInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      // 所有权限的数据
      rightsList: [],
      // 树形控件的属性绑定数据
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      // 当前即将分配角色的id
      roleId: '',
      addRolesDialogVisible: false,
      addRolesForm: {
        roleName: '',
        roleDesc: ''
      },
      addRolesFormRules: {
        roleName: [{ required: true, message: '请输入角色名', trigger: 'blur' }]
      },
      editRolesDialogVisible: false,
      editRolesForm: {},
      editRolesFormRules: {
        roleName: [{ required: true, message: '请输入角色名', trigger: 'blur' }]
      }
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    // 获取所有的角色列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败!')
      }
      this.rolelist = res.data
      console.log(this.rolelist)
    },
    // 根据Id删除对应的权限
    async removeRightById(role, rightId) {
      // 弹框提示用户是否要删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除！')
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )

      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败！')
      }
      // this.getRolesList()
      role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      // 获取所有权限数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败!')
      }
      // 获取的数据保存到data中
      this.rightsList = res.data
      console.log(this.rightsList)
      // 获取三级节点的id
      this.getLeafKeys(role, this.defKeys)

      this.setRightDialogVisible = true
    },
    // 通过递归的形式,获取角色下所有的三级权限的id,并且保持到defKeys数组中
    getLeafKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defKeys = []
    },
    //点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败!')
      }
      this.$message.success('分配权限成功!')
      this.getRolesList()
      this.setRightDialogVisible = false
    },
    addRolesDialogClose() {
      this.$refs.addRolesFormRef.resetFields()
    },
    addRoles() {
      this.$refs.addRolesFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('roles', this.addRolesForm)

        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败!')
        }
        this.$message.success('添加用户成功!')
        this.addRolesDialogVisible = false
        this.getRolesList()
      })
    },
    editRolesDialogClose() {
      this.$refs.editRolesFormRef.resetFields()
    },
    // 展示编辑角色对话框
    async showRolesEditDialog(id) {
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editRolesForm = res.data
      this.editRolesDialogVisible = true
    },
    // 修改角色信息并提交
    editRolesInfo() {
      this.$refs.editRolesFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put(
          'roles/' + this.editRolesForm.roleId,
          {
            roleName: this.editRolesForm.roleName,
            roleDesc: this.editRolesForm.roleDesc
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }
        this.editRolesDialogVisible = false
        this.getRolesList()
        this.$message.success('更新用户信息成功')
      })
    },
    //删除角色对话框
    async removeRolesById(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该角色, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
          center: true
        }
      ).catch(err => err)

      // 确定返回confirm  取消返回cancel

      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) {
        this.$message.error('删除角色失败！')
      }
      this.$message.success('删除角色成功！')
      this.getRolesList()
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
